What air purifiers are you using that’s helping during fires? W. no ozone and BPAs?

I was in the thick of it wed night helping people Evacuate Altadena and my lungs are dying from being on frontline for 12 hrs. What air purifier do you use that you swear by! No Affiliate junk please, I need help not selling me crap. Thank you 🙏🏼 need to buy asap in 300 zone for air quality.