Air purifier for his allergies

My own boyfriend has the worst kind of allergies. I feel like he is allergic to everything humanly possible. His allergy symptoms resemble a cold. He sneezes, gets a sore throat, coughs, gets a runny nose along with bad congestion. I didn’t really know about his allergies until we moved in the same place together, and I brought my cat and dog with me. His eyes would swell up really bad and he was constantly itching them along with facing other symptoms that I mentioned previously. Unfortunately, I had no choice but to give my dog and cat to my parents, and they stayed at their place for the time being. I was truly sad, but I really wished to live with my boyfriend very much. In our house, my boyfriend has what he calls a ‘man cave’. It’s down within the basement. The basement is cold, damp, humid and has a bit of a funny scent. Naturally my boyfriend was allergic to everything downstairs as well. One day my friend recommended that we try some sort of air purification system. I had no clue what that was or what it even did! An air purifier is a device that removes pollutants in the air in a household or building. I can’t believe that I didn’t know about these kinds of systems before. After checking out which air purifier works great for allergy sufferers, we splurged and bought two air purification systems. They were very expensive, but we really needed to experience a solution to help my boyfriend along with his allergies. We now have great quality of air in our basement and my loving boyfriend doesn’t have to suffer anymore at all when he is down in the basement.