The incident took place on an Elizabeth line platform at the station.
Fourteen train passengers received medical treatment after a smell of chemicals was reported on an underground platform at a major London railway station, firefighters said.
The incident happened at Farringdon station in the centre of the capital on Thursday morning.
The station was evacuated and closed, but has since reopened.
London Fire Brigade (LFB) said in a statement: “Firefighters were called to a report of a smell of chemicals on an Elizabeth line platform at Farringdon station this morning.
“Crews attended and carried out a sweep of the area to check for elevated readings of any chemical substances. No elevated readings were detected.
“Fourteen people were treated at the scene with two of those people taken to hospital by London Ambulance Service as a precaution.”
LFB said it was called about the incident at 9.41am and dispatched various units including two fire engines.
The scene was declared safe by 11.35am.
