The super-sub-ohm builds I've resumed using voodoo wool.It is fire-resistant so if the juice does ignite I simply cease firing & blow the flames out.
I'm in a huge sulk atm,rebuilt the Zenith @ 0.07 (triple,parallel 0.5mm dual coils)inserted the 4mm voodoo(tin foil round the end of the voodoo)and test fired to check coils lit evenly,and the lipo cells died(recharge needed)so put Zenith on my copper nemi with freshly charged 18650 and primed the RDA with DIY licorice+cherry.A few draws later,the juice started to taste like burnt rubber so removed cap & started removing the wicks...to find that they had started wicking up the melted insulator from the centre-post.Grrrrr!
I really do wish these fuckwit clone manufacturers would STOP using fucking shit plastic for the insulation,I bought a Mephisto clone that has PEEK insulators & it cost less than the fucking Zenith.