Calgary Fire Department Sees Surge in Calls Over Airport Odours

The Calgary Fire Department is reporting a sharp increase in calls from residents concerned about unusual odours near Calgary International Airport following the spring thaw.

Officials say the strong, rotten egg-like smell is linked to stormwater runoff ponds at the airport. The odour is primarily caused by glycol used to de-ice aircraft during winter operations. As temperatures rise in spring, these ponds thaw and release sulphur-like gases, which can resemble the smell of natural gas or propane.

Fire Chief Steve Dongworth said the volume of calls has been significant. Crews have responded to more than 60 odour-related incidents in the past month, with over 20 calls on some days. On April 6 alone, one crew attended 15 calls during a single shift.

“These types of calls can put pressure on our resources and raise concerns about maintaining response times for other emergencies,” Dongworth noted.

Authorities emphasize that the odour, while unpleasant, is not considered hazardous. However, residents are still urged to take precautions. If the smell is detected indoors or there is any suspicion of an actual gas leak, calling 911 remains essential.

For outdoor odours in areas surrounding the airport, residents are encouraged to consider the known seasonal cause before contacting emergency services.

The Calgary Airport Authority is currently working on infrastructure upgrades aimed at reducing these recurring odour issues. The improvements are expected to be completed by 2027.

Until then, officials say awareness of the source can help reduce unnecessary emergency calls while ensuring resources remain available for critical incidents.

Courtesy: The City of Calgary Newsroom