A Cover is provided on the cig socket connector to ensure the connection is safe from dust and dirt and water when not is use
2010;110:167-71.[PubMed Abstract] - 61.Russell M, Pauly MP, Moore CD, et al
Dose-response relationships between thyroid hormone (free T4, TSH, and TPO Ab) and urinary cotinine levels were estimated using ANCOVA after adjustment for all variables (age, height, weight, alcohol, exercise, and log- transformed iodine in urine)

In The Cigarette Century: The Rise, Fall and Deadly Persistence of the Product that Defined America, Allan Brandt draws upon an exhaustive array of historical documents (i.e., secret in-house memos, court records, advertisements, government reports, scientific research, etc.) to illustrate "how the cigarette reflects the most powerful cultural and political debates of our time." Brandt sheds light on the tobacco industry and its masterful efforts, at the turn of the twentieth century, to capitalize on Edward Bernays's (Sigmund Freud's nephew) insights from the budding field of public relations or "the science of 'group mind' and 'herd reaction.'" Bernays's approach called for the manipulation of public opinion by "staging" public events that could then generate news that could be tainted to serve the self-interests of the corporation
Plus, you can keep properly maintain your property so other harmful things (like mould and mildew) dont form