My NHS building currently doesn't have working heating - I'd prioritise that right now rather than a fancy air filter.
As for mask mandates and the "everyone can wear them... woo anti-maskers, anti-vaxxers" shite. 2020 was that way <---
I still cannot wear a mask for more than about 30 minutes and I cannot function effectively while wearing one. That's despite trying to the point of nearly passing out in Tesco, nearly clawing the skin off my face trying to get through a meeting in school and having to push that far into time tolerating one so I could actually keep some semblance of my career. I'm autistic, it's a huge huge huge sensory trigger for me and I can't even tolerate a corner of the duvet coming up near my mouth overnight. I can push through and last about 30 minutes - but I'll be in fight or flight mode most of the day and it'll burn me out for a good few days if I have to do it.
I almost broke myself trying to appease the pro-mask brigade on here. I pushed and pushed because they insisted I just wasn't trying hard enough, then I avoided going out because even if I was unable to wear them - there was so much public hate out there I was too scared to... then I resorted to wearing a lanyard - I'm incredibly chilled out about being autistic - but having to wear a lanyard basically declaring that so I could buy spuds in Tesco... and the assumptions I was a UKIP loving, Trump shagging Gammon... yeah...