I have seen the 4081's (SE Gold) get a filler stuck on the atty bridge and cause this problem. You have to be careful not to twist the cart when it is on the atty or it will get caught up in the bridge and leave some filler behind to burn.
Also, have you been using the same cart since last night? If so, it's gotta be dry by now

I usually got about an hour on a cart.
If you've got juice, just top off your cart and put a single drop on your atty. Should fix it up. If you don't have juice, get some. you're gonna need it
Also, you will still be getting some vape when you hit that burnt atty taste, that's how you know when it's time to top off.