Okay first off im not a smoker! So don't go lecturing me! 
Im just totally confused cause they age to buy it is 18..yet its legal to smoke it from age 16?
And if its illegal to supply it to an under 18 then how is it lega to smoke from 16? This really confuses me...

Im just totally confused cause they age to buy it is 18..yet its legal to smoke it from age 16?
And if its illegal to supply it to an under 18 then how is it lega to smoke from 16? This really confuses me...