But to answer your question. You first have to understand fully what weeds intoxicating effects on your body are. If the taste and smell is funny, And the effects are way off base than a normal THC high. Than you might be lookin a laced bud.

I smoked PCP or Embalming fluid laced buds. And let me tell ya. You'll know when something aint right. Whenever I smoke a new batch. And I think the buds are skecty. I just smoke a little and from the effects I can tell if it's sweet Mary Jane or laced up Mary Jane.

It's really the only way to find out. Study the effects. Smoke small amounts. Test your buds before you smoke huge amounts.