what are good and bad for asthma? i heard humidifiers make it worse and air purifiers blow out mold and dust, my room collects dust easy and im tired of cleaning it every other day.

I have an air puirifier and it helps tons for asthma. but buy one that does all jobs together: mold, some bacteria smoke dust some viruses odors. and not one that needs one machine for each room ,that's expensive

My son's pediatrician told me to use a cool mist vaporizer only. It did help alot.

most important thing to make sure of is to keep it clean
doesn't matter what you use -- if it's blowing around mold and viruses it's still going to make you sick