Also, air treated with UV light smells terribly. I was raised in Bulgaria and like in most Soviet bloc countries, during the winter, all kids were getting irrad

Also, air treated with UV light smells terribly. I was raised in Bulgaria and like in most Soviet bloc countries, during the winter, all kids were getting irradiated daily at kindergartens and schools for 5 minutes to get vitamin D. That smell around the UV lamp is so strong in my memory! Of course, we all wore goggles.