- Cannabis is not a safe alternative to tobacco. Cannabis smoke has many of the same chemicals as tobacco smoke. These chemicals can have a negative impact on health by causing respiratory issues and have been linked to cancer. People who smoke cannabis can risk greater exposure to harmful chemicals because they may inhale deeply and hold the smoke in their lungs for longer periods of time.
- In closed spaces, people exposed to second-hand cannabis smoke can sometimes exhibit mild but detectable drug effects, such as impairment. Furthermore, non-smokers exposed to second-hand cannabis smoke can produce positive urine drug test results.