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
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
Humidifier or air purifier 
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