i have seen a lot of vids on line with people spraying biocide with no resperator benz and algoclear ect shorly these people no if will bugger your lungs cause all soets of problims even just doing one job and breaving in some vapor can cause seriese lung damage ! even on the benz page there is a chap spraying biocide with a face sheled but no resperator shorly this is bad as others will follow thinking there safe or am i missing something lol