Do patients report a smell of burning toast prior to a heart attack or prior to a stroke? If there are no other symptoms, just a smell of something burning such as toast or hair, could this be a symptom of a stroke or heart attack?
There is a fairly common misconception that if you smell something that is not there (such as burnt toast) it is a sign of a stroke. This is not true. However, because a stroke can occur in any region of the brain, the sense of smell can be affected. Rather than smelling something that isn't there, though, it's more likely that the ability to smell anything will be hindered or that your response to smells is altered.
Here are some links that might be useful for you:
Stress and Heart Disease
7 Ways Your Body Says You’re Stressed
Heart Attack Symptoms in Women
I am a nurse and I have honestly never heard this, please check with you doctor