japan customs tobacco allowance cigarettes limit Japan-based airlines report record 429 cases of in-flight smoking in 2025 Duty-Free Allowances at Japan's Airports:

[DOI] [PMC free article] [PubMed] [Google Scholar] 262.Silverman DT et al

After four weeks of cigarette smoke exposure, the spleens were harvested and ground in physiological saline to prepare single-cell suspensions, which were subsequently filtered

J GEN INTERN MED 37 , 10231030 (2022)

This Xikar humidifier functions as a travel humidor, too

Thus, this work provided new insights about the strong relationship between smoke exposure and behavioural patterns, where the changes caused by smoke, such as inflammation and oxidative stress, could lead to anxiety and panic-related behaviours, independent of the influence of nicotine or other tobacco components