Can you explain if it's true that weed is safer than cigarettes?

I don't think so.: Marijuana smoke contains bronchial irritants. Inhalation with marijuana is more prolonged ; deeper than with tobacco. Higher combustion temperatures are reached because it is smoked to a shorter butt. This leads to a carboxyhemoglobin concentration that is 5 x ^ than tobacco. 3 x more tar is inhaled. Prolonged use of cannabis can lead to airway inflammation, wheezing ; ^ in sputum production.