Yep, the anecdote of methyl iodide leaching through nitrex gloves and skin to interrupt DNA sequencing by methylating your DNA was a chilling image that has stayed with me and reminded me how we are simply giant walking reaction beakers and can be pretty vulnerable to the whims of a tiny nm-scale molecule.

Another favourite was how cis-platin would crosslink DNA to prevent replication of cancer cells in your body.

> to interrupt DNA sequencing

I think you meant "DNA transcription".

Thanks, I absolutely did!

I wonder if their is a thing called 'chemical noise level' in biochemistry.

Different harmless organic molecules that together work as sand in the engine.