Originally Posted by Conker
Smoke, definitely not, 99,99999% of them are highly toxic.
Frags indeed depends on field rules.
Most smoke is created using Sugar, Salt Peter and Baking Soda. And are not toxic at all.
Although I cannot with any certainty say that making and using a Smoke pot would be legal, although they are not explosives they could be controlled or otherwise prohibited. You'd have to ask someone with greater legal knowledge.