Dragonflies or Damselflies are completely harmless.
What we have aren't dragonflies(well obviously we have plenty of those too), they're really tiny and look like bees or wasp not sure what they are. With some keen googling aka typing in "tiny bee looking thing" I have found it is called a hoverfly and actually helps us
from wikipedia
Relationship with people
Many species of hoverfly larvae prey upon pest insects, including
aphids and the
leafhoppers, which spread some diseases such as
curly top. Therefore, they are seen in biocontrol as a natural means of reducing the levels of pests.
Gardeners, therefore, will sometimes use
companion plants to attract hoverflies. Those reputed to do so include
alyssum,
Iberis umbellata,
statice,
buckwheat,
chamomile,
parsley, and
yarrow.
of course a picture for ya
and to go with the thread
I love how friendly they are, just land on you and are like "what's up!" I'll have to tell people to stop freaking out and running away from them or me when they land on me and I just let em go