Stop kids staying in a house where there's weed being smoked?

[Honeymonster2]

My ex is living with his mum and he has mentioned the children coming to stay the night soon... his mum used to smoke weed and after a recent upset she's started again. I've been in the house recently and can smell it. I don't want my children going there or staying the night if she's smoking... do I have any rights to this? What is solution, to have my ex in my house for his time with them?

Alcohol is only damaging in significant amounts.
Drugs are damaging full stop.

Daft comparison. You can’t get drunk by being around someone who is drinking. You CAN get stoned inhaling secondhand smoke. No way would I allow my kids around weed smoke.

As a side note it really annoys me when people say that weed is ‘less harmful’ than alcohol. In the poor community I grew up in, the mental hospitals are filled with people who have gone nuts from smoking skunk. Loads of suicides of people who have gone crazy off it. And weirdly no one who has had liver disease from drinking.

"Weed is less harmful than alcohol" - false. In some people, weed can cause psychotic episodes. In young people it changes the structure of the brain and in all people it affects dopamine production. I've also witnessed violent behaviour from addicts who become verbally aggressive and abusive when they can't get hold of it (source - father was a weed addict).

Weed is written off as harmless but I think it is at least as dangerous if not more dangerous than alcohol, for a lot of people. And for the rest I still think it's dangerous. When I consider all of my friends who are regular users their lives are all messed up - unsociable, unhappy, unmotivated and their lives revolve around getting their next joint.

People need to stop being so blase about the dangers of weed. I say this as an ex user.

Yes this is my thinking too.

Yes we all know alcohol consumed to excess causes major problems, both personally and socially but it's not supporting the vile drugs trade.