We have a Frazier Fur that we put up just after Thanksgiving. Ther is an odor coming from the water in the stand that is very much like vomit. I'm not kidding.
It might be caused by the sap. The nickname for true firs (all others besides Doug Fir) is **** Fir because of the odor of the sap when you peel the bark. As others have stated, you can use some chlorin bleach. Also, you can use plastic wrap to seal off the area over the water to keep the odor from coming into the room.
-- Pardon my spam deterrent; send email to snipped-for-privacy@earthlink.net Cheers, Steve Henning in Reading, PA USA
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your tree water has bacteria for sure from the sounds of things what would do is take the tree down which i know would be a pain afte getting it all decorated etc. but i still would do it cut about two t three good inches off of the bottom then take a wood chisel and make deep x mark in the base of the tree so that there is an open area fo the tree to take up nutrients i would then clean as much of the jun off of the bark area as u can that still has any sign of either mol scum or whatever. then i would reset up your tree then do as this link says
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hopefully u will have good luck with your christmas tree. my dad also would give the christmas tree some sugar water every fe days in order to keep the sap levels of the tree up it helped to sto the needles from dropping and once a week he would give the tree couple of asprins. the one thing that i did forget to mention is tha with the sugar water and aspirins u have to be careful because wit some trees it can make them dry out faster i know we used this wit spruce trees. goo luck, sockiesca
-- sockiescat