Hi. Pretty long time I'm looking closely to the www.elakiri.com. I like this forumm. I'm not sure is the #categoru right category , but I really need the answer.#8 UV-C lamps in air purifiers?I'm just wondering, how are the harmful rays of UV-C lampe that are located inside air purifiers are blocked? I asw a few purifiers that only had an uv lamp behind front grill and a filtre yet they still have a protection that if you insert the grill improperly, the unit will not work. So how exactly do they protect against the harmful uv rays?