@14_teen IQ Air or similar hyper hepa air purifier will help loads. We have ours on always (its a fan, functionally) as well as a second fan some nights.
You really need to get to the source of the allergy though. Mold, dust. Vacuum every night before bed, ventilation to outside for 30m min every day. Swap carpeting for wood/tile and add smaller carpet (wool is great and naturally flame retardant), etc. Make sure your pillows & mattress are already wrapped in something like a waterproof/ dust cover. The one by naturepedic is soft, no plastic feel or sounds & non toxic.
You really need to get to the source of the allergy though. Mold, dust. Vacuum every night before bed, ventilation to outside for 30m min every day. Swap carpeting for wood/tile and add smaller carpet (wool is great and naturally flame retardant), etc. Make sure your pillows & mattress are already wrapped in something like a waterproof/ dust cover. The one by naturepedic is soft, no plastic feel or sounds & non toxic.