DIY Cat Litter Box Ventilation System [Weekend Project]

I have a number of allergies. One of them is to cats. It's only bad when there are multiple cats in a house. So needless to say, I'm not a big cat fan. Additionally, their litter boxes create a stench that makes me want to puke. I think all those with cats should do the same as this person did.

DIY Cat Litter Box Ventilation System [Weekend Project]"

Source: Lifehacker