Infrared? I don't even know what that reallyy means. I get some idea. The image looks like it's thermal - white being warm and black being cold. So, I just head over to Wiki for some reassurance - is infrared used for thermal imaging? I skipped through some lines and saw some keywords I wanted to see (dangerous!), that was enough for me. Can gas from your ass be that cold? Pressurized contents of spray cans are.