Many have seen the Ghosting on walls where you can see the studs or the ceiling is Grey.
This is commonly caused by Candles .
Did you know Candles can give of many toxic residues .
In 2000, the Public Citizen’s Health Research Group published a study in the Journal of the American Medical Association that indicated that candles with wicks containing lead were available at 12 different stores in the Washington-Baltimore area. Testing showed that the candle containing the least lead would, during three hours of burning time, produce enough air lead concentration so that a normally active six-year old would exceed the recommended daily lead limit for children in 45 minutes. The authors of the study concluded that there is no reliable method to distinguish lead-containing wicks from other metal-cored wicks.
Other issues that affect how cleanly a candle burns are the type of wax it is made of, and how it is burned. A candle burned in a draft with a Smokey, guttering flame will be emitting particulate matter into the air no matter what the wick material is. A wick that is too large for a particular candle will also flare and burn less cleanly than a properly-sized wick.