I too have allergies. Allergist says I am his most allergic patient. Can't do the nasal sprays or that antihistamines but once in a while. Ever heard of someone being allergic to antihistamines. (Sleep for long time like 24-36 hours).
Nettie pot helps, tile floor, cover mattress and pillows, rainbow vacuum or hepa filter vacuum, Hepa air filtes, hire a maid once a week to throughly dust. But if he won't cooperate, tell him you are increasing his life insurance and hiring a hit man. LOL