Fire suppression chemicals were released at the gas station on Wanton Road by Stop & Shop in West Hartford this afternoon and police believe it is because of the extreme heat.
Connecticut is experiencing the fourth day of a heatwave and the temperature reached 94 degrees at Bradley Airport. There is no relief in sight until Sunday, when the high in the forecast is 84 degrees.
One person was taken to the hospital as a precaution.
One witness reported that a woman was screaming because her eyes were burning.
Firefighters are investigating and said there were no explosions.
Fire suppression systems are installed in the canopies over the gas pumps as an extra precaution, according to companies that offer the products.
Photos from the scene show that the station is coated in white powder.
This is not the first time something like this has happened in Connecticut.
In 2011, the fire suppression system went off at the Shell station on Black Rock Turnpike in Fairfield, according to the Connecticut Post.