Numbers 28-30

In chapter 28 God details the sacrifices that Israel is to offer on a regular basis. The daily, weekly, monthly, and festival sacrifices. In almost all of these descriptions the phrase "..a pleasing aroma to the LORD..." Is included in the description. I've heard that the burning of animals is not a pleasant odor to most people. The smell of the flesh as it is burnt is foul. So I wonder if the aroma that God detects is found in the meat or in the attitudes of those making the sacrifices? Could it be that it is always our attitude that God values the most?
It took me about 15 minutes to read this passage.
Stuart