She took to social media to show the scenes of "rioting mobs wreaking havoc" which resulted in her and cameraman William Green having to stay in the building.
The pair eventually made it back safely to their hotel but not without encountering some unexpected tear gas on the way.
Reid said she and the camera operator had walked back the 400m to the hotel from their spot on the Champs Elysees after the crowds had left but there had not been enough time for the tear gas to disappear and they walked through it.
Photos shared by Reid show her bloodshot, watering eyes.
"That stuff burns!" she said.
Last week Newshub reporter Lloyd Burr had a pint of beer thrown over him while reporting from England during their match against Croatia.
While crossing live to the AM Show an "angry England fan" threw a pint of beer over him as he reported on the mood of the room turning from jubilation to anger.