JUSTIN HARTFIELD

CONTACT HIGH · 1:15

Can you get a contact high?

A contact high showed up only in heavy smoke in a sealed room, small and short; with home-like airflow, non-smokers reported no drug effect.

Contact High: Can You Get High From Smelling Weed? Watch on YouTube Subscribe

Can you get a contact high, and can smelling weed get you high? This covers the 2015 Johns Hopkins study where six non-smokers sat for an hour in a sealed room with six people smoking, what showed up in their blood and urine, what changed when the room had home-like ventilation, and what the smell of cannabis is made of.

The full answer

Can you get a contact high?

Can you get a contact high? Only from heavy smoke in a closed room, and even then it's small and short. I'm Justin Hartfield, and I've been selling cannabis for twenty-five years. In 2015 at Johns Hopkins, six non-smokers sat for an hour in a small sealed room with six people smoking strong joints. All six ended up with THC in their blood, felt a mild to moderate, sleepy high for up to an hour and a half, and did a little worse on a memory task. One urine sample tested positive at the federal cut-off of fifty, and four of the six at twenty. With ventilation like a normal home's, six other non-smokers reported no drug effect, and no urine tested positive.

Can you get high from smelling weed?

Can you get high from smelling weed? What you smell are terpenes and other light molecules coming off the plant, and the skunky note is sulfur compounds a lot like garlic's. None of them is THC.

The whole film is on my site, linked below. Next: What are terpenes, and is the entourage effect real?

What the studies show

Every claim in this answer, the study behind it, who was studied, and who paid for the research. “None listed” means the paper names no funder.

What the video saysSourceWho was studiedFunded by
Can you get a contact high? Only from heavy smoke in a closed room, and even then it's small and short Herrmann 2015 6 non-smokers per session with 6 smokers, controlled exposure NIDA, NCRR, NCATS
In 2015 at Johns Hopkins, six non-smokers sat for an hour in a small sealed room with six people smoking strong joints Herrmann 2015
Cone 2015
6 non-smokers and 6 smokers per session, controlled exposure with no placebo session Herrmann: NIDA, NCRR, NCATS; Cone: NIDA
All six ended up with THC in their blood Herrmann 2015 same study NIDA, NCRR, NCATS
They felt a mild to moderate, sleepy high for up to an hour and a half, and did a little worse on a memory task Herrmann 2015 same study NIDA, NCRR, NCATS
One urine sample tested positive at the federal cut-off of fifty, and four of the six at twenty Herrmann 2015
Cone 2015
same study Herrmann: NIDA, NCRR, NCATS; Cone: NIDA
With ventilation like a normal home's, six other non-smokers reported no drug effect, and no urine tested positive Herrmann 2015 6 non-smokers, controlled exposure NIDA, NCRR, NCATS
What you smell are terpenes and other light molecules coming off the plant, and the skunky note is sulfur compounds a lot like garlic's Oswald 2021
Rice 2015
chemical analyses of cannabis flowers Oswald: none listed, and its authors come from a cannabis flavour company; Rice: none listed
None of them is THC Oswald 2021
Rice 2015
as above Oswald: none listed, and its authors come from a cannabis flavour company; Rice: none listed

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Where this answer came from

You’ve Been High Your Whole Life, the playable film

Free, in English, Spanish and German. You run the experiments yourself.

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