Safer cigs- they don’t exist. No risk, no mouth, no smokes. It’s all nicotine and tar from here. Read up on the marketing mumbo jumbo of safer cigarettes and its history. Pretty interesante if I might say. Anything that is smoke that goes to your lungs isn’t supposed to be there and probably has a risk of being bad for you. If the earth wanted us to breathe smoke, she’d set us all on fire. Quitting is the best way to erase your chances of smoking-caused cancer. You could try all day to get less cancer, but all is gambling when poking around in casinos. Try a smokeless* carbon cigarette anyway.
Not all cancer is caused by smoke (or even second hand). Carcinogens are created when you barbecue your steak (the char), at your campfire (burning wood), and almost everywhere even when a fire is not present. Eliminating risk of cancer can be achieved by ceasing to be; not my suggested option.