You can introduce a flame to the offending orifice.
That would probably show up a color and if may produce different e color depending on the consituents of said anal expulsions.
Having said that of course, you would need to set a benchmark on what was normal so you could compare different colors as being ‘better’ or ‘worse’.
You could end up with a color wheel, so you could check if your anal expulsion was highlighting an illness that you didn’t know you had.
When I was little I was swimming with my father in the sea, I was wearing a snorkel and mask. During my underwater investigations I saw bubbles coming out of his swimming trunks.
He was hugely cross and embarrassed when I pointed out I’d witnessed him farting.
I’ve seen a rhino fart, and it was verry funny.
In a wild animal preserve in South Africa.
Rhinos often coat themselves with dust to keep flying insects away from their anus. But when they fart it’s like someone squeezing a talcum powder bottle.
And it goes on for 20-30 seconds!
My guess is that if you insert one of those birthday whistles that roll out when you blow 'em in your anus just prior to a rectal outburst, your flattus would be at least as visible as the rhino duststorm.
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*Originally posted by samboy *
So can your body ever get so sick that it starts producing a visible gas in the bowels? Or can you introduce something to the body to make it do this?
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Most gases are totally transparent. I’ve seen a couple of colored ones: chlorine, bromine, nitrogen oxides.
Hey, the visible spectrum is a human conceit. If you could see all the way down into longwave infrared, you’d see the absorbtion bands of gasses as various colors. And IR-vision alien could see who farted. (Or, if you had a thermal scanner, for you the hot gas would be visibly red hot!)