Honest Question-- need some insight

First off, I'm a guy and have next to zero knowledge on this subject, so what better place than Women's Health

The subject is vaginal secretions and smells.

#1. After a whole day, your panties/leggings w no underwear will obviously have a normal odor and slight secretion. From my experience, when I've gone down on a girl, this smell and taste is slightly pungent, but the smell doesn't carry. Like you have to put your nose pretty close

2. The smell and amount of secretion when a lady is engaged in sexual activities, I personally think the smell and taste is very distinct. It's has a sweetness in smell and the physical color of the secretion turns white when it dries and it is more viscous. This smell, imo, is a lot stronger and easier to smell

What I'm asking is-- are these 2 scenarios somewhat correct? 1 understand there may be a gray area.

In other words,, can the sweet stronger secretion happen without sexual activity