Do heroin addicts inject into cigarettes and then smoke it?

No, heroin addicts do not inject heroin into cigarettes to smoke it. Typically, heroin is either injected directly into the body, snorted as a powder, or smoked in its base form. Smoking heroin involves using it on foil or in a pipe, not through cigarettes. The methods of consumption are primarily based on the form of heroin and the user's preference.