But unlike many other flying insects, dragonflies are not aggressive and don't inherently attack people. The four-winged creature appeases its carnivorous appetite by preying on other flying insects that happen to be extremely annoying, including blood-sucking mosquitoes and pesky flies.
Will dragonflies attack humans?
Keep in mind, though, that dragonflies don't have a stinger, so they won't sting you. They do, however, have teeth. ... Dragonflies aren't an aggressive insect, but they can bite out of self-defense when they feel threatened. The bite isn't dangerous, and in most cases, it won't break human skin.
What happens if a dragonfly lands on you?
If a dragonfly lands on you, it is seen to be good luck. Seeing a dragonfly in dreams or if one suddenly appears in your life, it is a sign of caution. Something in your life is hidden from view, or the truth is being kept from you.