Authorities could nae divine from whence precisely the fumes under her home were emanating.
Dead rats, killed by the gas, had been found in her basement and weird smells were also prevalent.
Neighbours also complained about the stench and one newspaper* ran a photo of the poor woman as she slept, sickened by the toxic gases.
Mme Lafontaine had a five year old son who wasn't seriously sickened by the fumes.
So where is Chenneville Ave. downtown and why haven't you heard of it?
The houses have all been demolished and the Palais de Concrete now sits at the site.
*8 Jan 1956 p. 34 Le Petit Journal