From Hackepedia
If you've been sent an email forward, especially the kind with some type of warning, it's worth it to try and find the email at snopes.com. For example, I just got an email forward warning about glade plugins burning down a house. When I searched snopes for "glade", I found this link:
http://www.snopes.com/toxins/glade.asp This email has been going around the internet for over a year and never been verified. Things like this will happen all the time, usually from compeition (febreeze for example makes a spray can for example), or just someone playing a prank and seeing how many people it will get forwarded to. It's worth just browing through the website too, lots of funny stories that are fake, and real: http://www.snopes.com/snopes.asp