Yes, I'm talking about the two red spots in the upper right. I'm using vapor bliss eliquid(zero nicotine). 2 years ago when I stopped vaping I don't really use eliquids with nicotine but recently when I started vaping again, when I bought an electric cigarette from my friend he used an eliquid with nicotine in it to test the atomizer. That means there would still be traces of nicotine on the cotton when I vape. I think it's the nicotine because I don't use eliquids with nicotine.