Signs left for other insects

I hope this isn't a truly dumb question, but I've not yet found much information on the web for it (after limited searching...) After recently weeding a lawn and receiving an ordinary number of bites from the process, I've noticed more flies, gnats and other insects seem to be attracted to my legs than in recent days. Do various insect bites leave signs for others, particularly other types of insects, that the host is an amenable target, or is this another example of the concurrent itching creating confirmation bias. I'm normally naturally repellant to mosquitos and biting insects, so this recent assault has been annoying at least.

Sorry this is my first post here. I truly love mantids and beetles, I intend to spend more time here now that I've discovered this resource.