Getting back to kaiju tropism, in the Superguy shared universe it's actually the smell of the fixative polymer in the brand of cheap fiberboard (and as general glue) used to fix Tokyo after its frequent destruction that attracts kaiju. Unfortunately it's the only economically viable option, and kaiju are only a once a month sort of thing while stupidly powerful teenagers (in every sense) wreck the place two or three times a week.
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"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
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"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows