do actors smoke real cigarettes in peaky blinders Cillian Murphy reveals he's smoked 3,000 while filming How many cigarettes do Cillian
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While researchers cautioned the results are conflicting and limited, they also noted that there may be a greater potential for lung cancer from smoking cannabis than tobacco
Gaithersburg, MD, USA: NIST Gann RG (2007) Measuring the ignition propensity of cigarettes

Inspiration I was thinking about how actors have to smoke cigarettes and I wondered if they just did it by method acting

Typically, you can see if a fuse or wiring needs replacement if it looks fried and burned

[1] Large exposures can result in loss of consciousness, arrhythmias, seizures, or death
