Yes, if it sticks on the plane's smoke sensors.
At least that's what happened to a Jetstar Pacific flight in Vietnam on Wednesday, which was delayed after the plane's computer system warned the crew of smoke in the cargo hold.
The Airbus 320 of Jetstar, which was taxiing for its scheduled 2.30 p.m. take-off in Ho Chi Minh City's Tan Son Nhat Airport, had to return to the apron and passengers to the departure lounge.
The pilots, meanwhile, activated the automatic fire extinguishing system in the cargo hold.
After a three-and-half-hour check, engineers of the airlines concluded the "smoke" was actually a bird feather which somehow had sticked on smoke sensors in the cargo hold and cause the computer system to make false alert.
Passengers were arranged to board another flight at 6 p.m. the same day for their destination of Hanoi.
The incident not only delayed that specific flight but also a number of later flights of Jetstar, according to the airline's press release after the incident.
Earlier on Tuesday night, a VietJet Air plane was forced to return to the gate on Tuesday after a passenger asked the captain to turn the plane around so she could address, what she described as, "an emergency family affair."