To my knowledge and from what I have read here, most often cotton including organic cotton is "bleached" with hydrogen peroxide, to give it the white appearance. Since hydrogen peroxide is a disinfectant and can be used orally I do not find any risk with it. By no means am I a scientist, nor do I know if we are getting any residual exposure, or if that would be harmful inhaled. IMPO I stay away from ekowool as well as silica after reading an article that claimed it may pose health risks. Lastly I personally would advice against boiling any cotton as the chance for bacteria simply from our hands, and other surfaces it touches, finds a prime warm wet environment in the cotton after it has been boiled. Just my 2cents on that note. As for the taste, I have not had any luck ever NOT getting that taste after rewicking. It is just something that I have gotten use to, First 1-5 hits I will have a slight "new cotton" taste and it diminishes.