Fire service sounds alarm over scam carbon monoxide calls

City firefighters are sounding the alarm about scam calls from an apparently non-existent charity.
Callers claiming to be from Carbon Monoxide Safety Canada are not affiliated with Ottawa Fire Services, spokeswoman Danielle Cardinal warned.
The fire service has received more than a dozen inquiries from people who have gotten calls from the purported safety group — which has no phone number or online presence beyond fire service warnings — demanding access to their homes to make sure