The Path Drugs Take Through the Body. Substances can enter the body through various means. Drugs can be smoked, snorted, injected, swallowed (pills, capsules, liquids), or applied through transdermal means (applied to the skin).1,2 Some substances can be eaten, such as marijuana.
If they ask if you want to smoke, simply say no. If they don't respect your decision or try to force you, then call a trusted friend or adult and leave