I usually only take snuff at night, when I've having a drink and watching a movie at the end of the day. I also almost exclusively use scotch snuffs, which don't tend to clog the nose. Because of this, I often forget to blow my nose before going to bed, so the snuff ends up staying in my nose overnight. Does this have a negative impact, as far as health is concerned? I remember Uncle Squinty saying something about blowing your nose after ten minutes because the tobacco contains some compound that's not healthy (something that begins with a T; I can't remember what it is).