sigh.
so many myths, so many mis perceptions. IF your face was numb the next day it had a non-cocaine component in it - or there is something wrong with your sinuses. The smell might have been acetone but it could have been benzene (you don't want benzene)- it is hard for producers to get large quantities of acetone these days. A test for cocaine may not show impurities (not cuts but poor lab work). Coke can look damn good, even to those who know what they are doing and still prove not to be as good as they think. Just because it comes out of a brick does not mean it is not cut and it certainly does not mean that it is pure, there are a whole lot of lab guys who don't really know what they are doing.
Mellow? I don't know, if you expected a crank like buzz, you might get it, you might not. It doesn't have to be any color, pink, blue yellow or white as PURE coke will always be dazzlingly white but many times a pink or blue tinge indicates a degree of care in processing. Yellow usually indicates a bit less care. I have seen coke that was not flake at all and was translucent - like a large slightly wet sugar crystal that was some of the finest I have ever had (think sugar crystal candy sticks).
If it smells, then let it sit out for a while unless you really like putting organic solvents into your nose and throat.
If you smell bubble gum then you know that it WAS really good coke but now it is breaking down - we always figured it was still pretty damn good - that product of degradation has an effect and it is not as bright and energetic as cocaine.
If you smell dirty socks or a dusty smell, it might be good as well but likely not - if you are going for artisan quality.
The high? it can vary and I am not sure why, from an electric sort of rush to sublime euphoria tinged with deep energy that lasts maybe as long as an hour.
We always found that if it was sourced from Bolivia it was more "speedy" and if it was peruvian it was more, in your terms... mellow.,
The problem is that folks tend to cut it with speed and then they think that is the way it is supposed to feel. If it made you want to go take a shit - it is likely good coke. That feeling is NOT the manitol cut. I had an incident where my partner went to a buy and the guy who took a sniff said "I have to shit, this stuff is cut". My patner took a quarter ounce rock from the bag and threw it at the guy, it missed and hit the wall, then we left. "asshole doesn't even know his blow" was the parting comment.
The active dose of manite for a child in order to act as a laxative is several grams - FAR more than anyone would usually put up their nose the first time they taste.
PURE cocaine HCL does not smell at all. The larger the flake the more it will cut your nose and throat because Acid is trapped between the flakes and is not washed well.
If you are getting something like what you are describing, then you can either clean it yourself with anhydrous acetone or you can re-crystalize and have some nice fluffy, very clean product.