Repetitive and deep burning sounds too much like real torture. I had a mistress who used to use cigarette in a long holder or a cigar (more surface) to tease and entice and blow smoke in my face. The application became was a quick touch to very sensitive places like nipple, underarms, inner thighs after a long session of threats and verbal abuse, including mouth as ash tray. Cigar ashes taste better!

When I play dom. I use cigar smoke to create discomfort for slave (her pretty face engulfed in tungent smoke) or make her smoke it, which is more awful to her than a burn.