My wife and I married from last 5 years. After marriage when she moved in my house but after few days she started getting allergy from what I assume dust particulars. So she sneezes a lot and at night her nose is choked. She is having zylera m and budnese noise spray for a long time as instructed by our ent specialist. But some days she has bad choked nose and lot of sneezing. I used to have some issue few years back but now its mostly sorted. My room is mostly packed and ac is on most of the time. Try medicine didn't help much and we don't want to try operation can a air purifier help her with allergy. Do air purifiers machines really good for anything?