Smoking had already been banned on the Nagano (Hokuriku), Tohoku, Joetsu, Akita and Yamagata Shinkansen lines after the Health Promotion Law, which requires companies to prevent secondhand smoking, took effect in 2003
TEREA is a heated tobacco product, not risk-free
With smoke particles, on average, 0.3 to 0.5 microns in size, theyre easily caught by the filter
Some building-related factors that determine an exposure cannot be assessed accurately by a questionnaire, such as the rate of air exchange and the size of the microenvironment where time is spent, nor can concentrations be assessed accurately by subjective reports of the perceived level of tobacco smoke
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