Crossover blend?
Just plug the rat in line, set the dirt anywhere from mild to chainsaw and then use the filter to dial from klang to sludge.
I like this video because he really shows how the distortion and filter play together:
For me, in band setting, the range of usability lives really when I set the dist between 9 and 11 o clock and the filter from noon to bear full.
If you want to put this pedal on a side chain you can, but there's really very little point.
https://hg.eu/uk/products/hg-odour-eliminator-for-clothes-and-fabrics
This stuff. Works great getting smells, smoke/soot, pet smells and so forth out of cases, bigbags, upholstery, carpet, draped, curtains, mattresses etc etc.
*Deezer *
Edit: apologies, even Deezer can't stop uploaders from sneaking ai hidden in albums. They do tag it and encourage users to report ai.
https://support.deezer.com/hc/en-gb/articles/28222522835101-AI-Content-Tagging-on-Deezer
IEMs have a different job than earplugs do. A perfect seal isn't required to hear something, but it is necessary to reliability reduce sound pressure levels.
Some brands, like Alpine, have pro shops where they can measure if your protectors are seating properly.