I said it before and I said it again, pilgrim, if you're looking for a non-toxic solution, use ethanol. If you are near a college campus you can get large quantities (denatured) for cheap. That has a low methanol content, but unless you guzzle it, you're okay. If you're so worried about it, you really should just use water and WW. Once your system is closed (use good grade hose) and you wipe it down with a wet cloth to get any WW residue off of it, you won't smell it at all UNLESS YOU HAVE A LEAK. Consider the reek your first line defense against disaster.
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