Sorry this is a long one. I'm hoping for some advice, I'm not trying to cause trouble just reached the end of my tether. I know also in reality is not a massive issue or could be so much worse but it is really causing me a lot of upset.
Just to add as a context when I was younger I suffered through issues with my family members having alcoholism and using cigarette smoke as a way of bullying me (they knew I hated it and would constantly invite drunk 'friends' over and they would all sit outside mine and my siblings bedrooms drinking and smoking cigarettes and weed as I tried to sleep flinging the bedroom door open and sit there laughing about it as it distressed me) so this experience below definitely feels like it is touching on the past trauma I've experienced. I have had counselling in the past for this, and have dealt with this, but the trauma is still there as it happened and it's not going to just go away with more counselling etc. Although I have started to consider getting more counselling as this is really getting me down.
My partner and I recently brought our first home together last summer. It is a lovely maisonette flat, with two other flats below on the ground and then first floor. When we moved we didn't realised our neighbour directly below us on the first floor smoked. As we'd only recently moved in we didn't want to cause issues so we just really well sealed up our front door which has helped to some extend. The neighbour is generally quite pleasant, when we see him about, but I believe there is some sort of drug taking/buying/selling going on as he has people over all throughout the night which we can hear as the front door and his door is always slamming so I'm a bit scared of him. He has also had parties since we moved in (obviously not Covid compliant), and the cigarette and weed smell has been awful. Things were relatively ok at the start when we moved, but since the ground floor neighbours moved out things have been getting worse and worse with the smell of his cigarette smoke in the share hallway (particularly around our front door as it is a section of restricted airflow) and also seeps through our front door into the rest of our flat and through the floorboards into our living room/kitchen.
I'm early days pregnant, and I know with the pregnancy hormones my sense of smell is properly better than it was, but it seems that the smell of smoke is getting way worse every week. I pretty much spend my entire time in our bedroom on the top floor where is a bearable, and can't spend time in our kitchen/living room/downstairs bedroom/study because of the smell of second-hand smoke literally makes me sick. It's pretty miserable as I'm still WFH and will be for the foreseeable future so don't get any variety in space in or out of the flat at all. Our flat is pretty small and we have indoor cats that need the option of space to roam around the flat if they want, so closing doors to rooms isn't really a solution as it isn't fair on them and would stop us using our home as normal.
Around a month or so ago I spoke to the neighbour and said the second-hand smoke was getting into our flat and could he consider sealing his front door to stop it escaping his flat and maybe opening a window when we smokes, and offered the left over things we had to do our front door. He seemed receptive and said he would roll up a piece of carpet at the bottom of his front door to stop it escaping, and I noticed he started opening his window a little which I'd never seen him do before, he also told me he barely smokes so didn't know why it was happening. I hate any sort of confrontation so it was a massive deal for me to speak to him about this and was as nice as possible about it. Initially things improved and I was able to start using the kitchen/living room again, but after a week or so it just went back to what it was, and the last few weeks it has got way way worse I think because he's been having more people over and they come through the shared hall with lit cigarettes. There is a no smoking in this premise sign, but they don't seem to pay attention to this.
I always have the window opposite our front door wide open and for a while was using a fan outside our front door to try and blow the smoke away from our door. And I brought a massive, expensive air purifier for our flat which I sure isn't the cheapest thing to run. I also brought a plug-in air fresher to put in the shared hallway which helped for a bit, but it's not a perfect solution, and now the smell of smoke is even overpowering this now, plus I know the air freshener is only covering it not getting rid of the dangerous second-hand smoke.
I've been feeling like I was going mad as can constantly smell the smoke in my home, our sofa stinks so I barely sit on it anymore. It has upset me so much as I feel like I'm being gaslit to feel like I'm going mad after he said that he barely smokes and that it is just my hormones, but equally I know the dangers of second-hand smoke I don't want my baby to have increased risk of SIDs and asthma etc. all because the neighbour/neighbour's friends being inconsiderate. Just to add also the baby will initially be in our room upstairs for the first 6+ months, but the plan was for bedroom/study downstairs will be turned into a guest room/study and nursery for the baby which but this room floor is the neighbour's ceiling so the smoke will likely be seeping into this room too. Now this doesn't seem like a sensible option and we'll all be in the same bedroom until we move.
I'm not sure what else I can do other than move and the last few weeks I've just been constantly searching to move which is sad as we've been doing up the flat and really hoped we'd be here for a good few years. I know the neighbour rents and I got in touch with the estate agents to check if smoking is permitted in their premise and they said it is. I could contact the council about nuisance smoke or the freehold company for our flat block but I feel like this will inevitably cause issue between us and the neighbour which I really don't want and don't want him to have any negative consequences, and realistically I'm not sure there is much any of them can do anyway. Equally I don't feel like my flat is even somewhere I can enjoy, feeling comfortable in or feel safe in anymore.
Please know I'm not saying he shouldn't smoke in his flat, although that would be great if he didn't, it is his flat and his decision, I just want him to be considerate that the shared hallway stinks and that it seeps from his flat through the floorboards, and that his actions are affecting and damaging others' health.
Should I just accept that this is what it is and if it makes me so unhappy just move? Due to various reasons it will be difficult and expensive to move, especially when I'll be looking a going on maternity leave in the near future so need to save as much as possible and I'm scared of running into the same problem or worse again, plus we really loved this flat and it's our first home together so it breaks my heart to feel like we'll have to leave it so soon.