Swamp Coolers And Infections Allergies, Swamp Coolers And Filters, Please I Need To Know?

Allergies, swamp coolers and Filters, please I need to know? - swamp coolers and infections

I asked in several categories, is as bad, we have a cold swamp and I've never used in my life and my allergies have never been so bad, my husband uses, such as straw and filters were covered black mold or even Goo changed, he says, they are better than foam, which is best? I find no information on the Internet about this, and I know, swamp coolers are called something else, is what her name?
Thank you!