Scorpion stings can be fatal, but the passenger on the United flight made out okay. (Arie Van Der Meijden/AFP/Getty Images)

Attention, United Airlines passengers: Don’t forget to lather up with “Off.”

A couple returning from vacation in Mexico apparently brought on an unexpected passenger: a scorpion. It turned out to be another stinging moment in a tough week for the airline, according to a report by CNBC.

During a flight from Houston to Calgary, the creature dropped from the overhead bin, landing in the man’s hair, according to news reports. When he shook it out onto his tray table and picked it up, it stung him.

The scorpion was disposed of in the toilet. And other than suffering what “felt like a wasp sting,” the man was okay.

[Why people will keep flying United even if they don’t want to]

“Medical personnel met the aircraft after it arrived in Calgary,” United spokesman Charles Hobart told CNBC.

“Talk about snakebit,” said Andrew Gilman, a crisis management expert. “The next time United does its emergency protocols, they will be dropping insect repellant along with the mask.”

The airline has been in damage control mode all week as it attempts to tamp down widespread criticism from a deeply troubling video of a paying passenger being forcibly removed by law enforcement officers from his seat to make room for airline personnel on an overbooked flight from Chicago to Louisville. That incident also occurred on Sunday.

[Lawyer for United passenger: ‘Will there be a lawsuit? Yeah, probably’]

United chief executive Oscar Munoz has repeatedly apologized to the passenger, who is a physician, and the airline has said it will reimburse all of the passengers on that flight.

Read more:

Tesla’s ‘crazy’ climb to America’s most valuable car company

How hipster brands have the king of razors on the run