Im asthmatic & i've spent thousands of ringgit at Gleanigles on treating myself..So, i decided to buy a air purifier hoping it would make a difference..got a Sharp Plasmacluster one for RM 700. Honestly, i never woke up having wheezing, flu or whatsoever.. It's been 4 months i bought it & it's also been 4 months since i visited the hospital.. I do get very mild attacks of asthma but the inhaler helps..as long i don't need to rush to the hospital 

It's worth investing on an ionizer for those who's prone to fall sick..