@Zaratzu that is true we do have a 5th scent it is called Umami which is the equivalent to a “savory” taste.
I’m a Perfumier by trade, and over the years I have noticed that scents do in fact alter taste, and vise versa. It may be just my overexposure to essential oils over the years although I would have to disagree with @asieg33 in regards to scents bypassing the Amygdala and going straight to the brain. If this was the case scent wouldn’t trigger emotional based memories from childhood. Although I do agree with you other points made.
For me personally taste and scent go hand in hand, when I smell something I can also sometimes taste it, if I’m woken up to the smell of bacon and eggs I can taste it for alittle bit until I fully wake up. Even when I hear certain music I can smell and sometimes taste it (this may be due to me being born with a little bit of Synesthesia) I know this is around 3 years too late although just stumbled upon this thread and interested me