Chief Keef -- Fatal Shooting Was Not at MY Marijuana Dispensary

Two men were fatally shot at a Compton marijuana dispensary which appears to have ties with Chief Keef, but the rapper tells TMZ everyone's been fooled by social media.

First off, the crime: L.A. County Sheriff's deputies went to GLO Gang weed shop and found the victims already deceased from apparent gunshot wounds. The identity of the victims is not known.

Now, here's where Chief Keef comes in. Last year, he posted a video of someone touting the opening of the GLO Gang shop. Since Keef calls his crew the Glo Gang -- and he smokes a lot of weed -- fans assumed he was affiliated with the place.

But a rep for Keef tells us he's never been to the shop, and has no financial connection to it whatsoever. We're told he did the IG post simply to help his homie Wolf Da Boss -- the actual shop owner -- promote his business.