Hi!

Like Sara's, my family's a mix: the type A is a
frequent target and uses pennyroyal oil to deter
bugs. The type O's include two low-targets and one
high-target.

Carbon dioxide is used by entomologists as a lure
to capture insects, and the difference between
one's body temperature and the surrounding temperature
also makes a difference to the insects' selection.

Someone who is warm and panting from exercise
is far more likely to get bit than those who are
mosying cooly along (why kids get bit.)
The most freqently bit type O in my famly is my
very warm skinned daughter.

Makes me wonder if type A's are likely to give off
more CO2 and/ or are warmer-skinned than many, but
not all, others.