The most common and most likely answer to this crossword clue is the 5 letter word DRONE
I've seen this crossword clue in Independent
D
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More clues leading to the result DRONE
- Finished crossing river in aircraft
- One to mate with the queen, that’s a buzz!
- Idle chap is leading medic?
- Doctor, individual who is 20?
- Flier finished crossing river
- Doctor with unit is a lazy person
- Radio-controlled aircraft finished across river
- One of the Queen’s dedicated lovers?
- Queen’s mate cheated, taking queen in
- Richard Wagner ultimately a person creating a buzz
Buddy explains!

The straight part
We know that "person (or insect?) creating a buzz" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case person (or insect?) creating a buzz = drone.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DRONE mean?
DRONE noun- A male ant, bee or wasp, which does not work but can fertilize the queen bee.
- Someone who does not work; a lazy person, an idler.
- One who performs menial or tedious work.
- A remotely controlled aircraft, an unmanned aerial vehicle (UAV).
- To kill with a missile fired by unmanned aircraft.
- A low-pitched hum or buzz.
- One of the fixed-pitch pipes on a bagpipe.
- A genre of music that uses repeated lengthy droning sounds.
- A humming or deep murmuring sound.
- To produce a low-pitched hum or buzz.
- To speak in a monotone way.