Dust protection of electronics - fire hazard?

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With the electronics and power supply being mounter under the main cutting board, which has a bunch of holes in it, won't dust be a problem - or even fire hazard?
i'm especially concerned about the power supply which even has a fan on it, which inevitably will suck dust in.

[wil4006]

https://www.makerfr.com/forum/viewtopic ... 707#p29707

Toute l’électronique sous la CNC, ça ne craint pas un peu en terme de vibrations / poussière / erreur de manip / fuite lubrifiant si on veut en mettre un peu ? Déporter dans un "petit boîtier" à coté ? ou mettre une planche intermédiaire pour assurer un peu d'étanchéité ? Bonne idée ou pas ?

All the electronics under the CNC, doesn't it suck a bit in terms of vibrations / dust / handling error / lubricant leak if you want to put in a little? Deport in a "small box" next door? or put an intermediate board to ensure a little waterproofing? Good idea or not ?