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Voice coil smell during show

Last night I backlined my two Eden D210XLT cabinets for a show. Paired, they're 4ohm and 700w handling.
One bands bassist was using a 500w head but also using a crazy amount of gain. During their set the pace started stinking like something was burning. Everyone was smelling amps to locate the smell. None of the amps smelt and we couldn't locate the source. Until we checked some lights near my cabinets and realized the smell was coming from my speakers. All 4 speakers smelt like hot voice coil.
I made that bassist turn volume and gain down and they played their last song.
I used the cabs for my band after and the speakers sounded as articulate and punchy as normal. No distortion coming from the speakers.
When I put the cabinets in my car after the show, I could still faintly smell it.
The smell was not apparent when I dropped them off at our practice space.
This was the first time these cabinets were pushed at show volume. One of the cabinets came from a guy who used it for home practice and never pushed them. The other was in a studio for over 20 years and not used often. I've used them for band practice for about a year but they don't see more than 250w at practice and I don't use a lot of distortion. Someone at the show said it smelt like a speaker breaking in but I'm not sure I believe that. Adding that into incase there's truth to that.

I'm going to go check them out in about an hour. I don't think I'll be able to see the voice coil directly to check for burns. I'll be bringing an ohm meter to test impedance. I know that you can push on the speaker to feel for the coil scraping.
What else can I do to test if these speakers are OK?
 
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People can be convincing with their confidence. That's why I check things out for myself and get advice from much smarter people than me when I need it.
It's a great idea to become educated about various things like this so you'll be confident in telling someone that they don't know what they are talking about.

That's easier said than done, but I'm speaking from over 50 years of experience from a playing and sound reinforcement career. Steady digging in, reading, asking questions of experienced professionals along the way.
 
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I know exactly what a burning JBL D-140 smells like. For my sins.

But otherwise, I can't really tell a resistor from a cap burning. I bet some here CANi
I can't tell what's burning by just the smell.

What's important is to be able to identify what is burning or has burned so the problem can be resolved properly.

The guys working around me in pro audio have learned to not pointlessly speculate on the cause of a problem that's crops up. I find it distracting and a waste of time. It's a wonder I haven't been fired from here for shutting down the boss when he's up under me asking me "what's the problem?" before I've had a chance to investigate.

No doubt I'm full of "get off my lawn!" these days…..🤣🤣