The developing lung may be especially vulnerable to such exposure because childhood is a period of rapid structural and functional change. For the developing lung, a genuinely protective standard may require more than asking adults not to vape nearby. Subject of Research: Third-hand e-cigarette residues and their potential effects on the developing lungArticle Title: When ‘vape-free’ should mean ‘smoke-free’: third-hand e-cigarette residues and the developing lungArticle References: Larcombe, A.N. “When ‘vape-free’ should mean ‘smoke-free’: third-hand e-cigarette residues and the developing lung.” https://doi.org/10.1038/s41390-026-05380-yImage Credits: AI GeneratedDOI: https://doi.org/10.1038/s41390-026-05380-yKeywords: third-hand exposure, e-cigarette residues, vaping, developing lung, children’s health, indoor air quality, nicotine, respiratory health