I guess they just have regular air filters. Tbh, I’ve never thought of it. You’re the only person to make me think of it. I have a friend who helped me repair my house after the
water damage. As far as I know, he knows a lot about air littering, so I think I should ask him about it. Tbh, I’m really curious about it. I’d like to buy an air filter for my house. I have a small child, so I think it would be reasonable. So, if I discover something reasonable, I’ll tell you about it. Anyway, let’s keep the topic updated, guys. Wish you all the best.