Although it is illegal to sell nicotine vapes to people under 18 years old, children and young people, and people who have never smoked, are using them.
Er ei bod yn anghyfreithlon gwerthu fêps nicotin i'r rhai dan 18 oed, mae plant a phobl ifanc, a phobl nad ydynt erioed wedi smygu, yn eu defnyddio.