I stopped smoking and became a vaper 5pluss years ago and have noticed one amazing thing it no longer hurts to cough i am at this time fighting a bad chest cold and with it a bad cough in the past the pain would be so bad i would hold it in and not cough causing my cold to last longer now it is like i never smoked and i have no pain so to every person making selling and fighting for ecigs pv i just want to say thank you