I have had this happen too. It's hard to add bleach to a front loader so it doesn't drip on the clothes and damage them.
I did this today and it worked well. I did the powder detertgent, the fabric softener, then I added half the bleach to fill the little cup then I added water to fill it the rest of the way.
The clothes came out smelling fresh due to the bleach killing the bacteria in the fabric.
I use bleach about once per day in a light or white load so I don't have a bad smell ever in my washer. I've had it almost a year and use it frequently.