Unless you are
ill, in which case you shouldn't be passing
bodily fluids at all, there is really no reason why
swallowing semen would put the partner in any danger. The semen is actually very
useful for many things. The most obvious being the
creation of a
embryo. However, semen is also used as a facial pack in certain
French spas. The semen acts as an
astringent, tightening the skin. (I'm sure most guys have noticed that...)
And, then there are those females (and males, for that matter) who actually enjoy the taste. That means no grimace or supressed gagging sound.
LM