herbal cigarettes safe or not don't mean less injurious. Their smoke is equally dangerous and can affect your health. Read to know what experts have to say about them Herbal cigarette - Wikipedia
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You might want to clean the leaves off before you start, they come moist enough to work with, but you can let them dry and wet them up later
Noise: Regular exposure to loud noises combined with smoking can put additional strain on hearing

Applied Environmental Research, 43(4), 14-28

In times of stress and puzzle solving, it can help to look at the process in it's most basic state

[DOI] [PubMed] [Google Scholar] 12.Ganesh S, et al

Diabetic Retinopathy Diabetic Retinopathy Smokers who also have diabetes risk getting diabetic retinopathy