A synthetic pot probe is underway concerning three recent deaths and at least 75 hospital emergency room visits in Colorado. The fake marijuana is sold in some convenience stores in packets of herbal supplements. This herbal packets have been sprayed with chemicals that will give smokers a high.

According to the Denver Post, “The CDC is sending four people to help with the epidemiological probe, which will look at medical charts of patients reporting the symptoms and study toxicology results …

… The announcement comes after metro Denver emergency rooms have seen a surge of new cases they attribute to the material, which often comes in teabag-size packets under names like Spice or Black Mamba. The illegal drugs are usually pieces of dried herb sprayed with synthetic chemicals that can mimic the effects of marijuana without leaving a THC trace in urine samples.”