Using 100% pure, sterile, organic cotton as a wick material is safe as long as you do not use a tremendous amount of it, and even then it is only unsafe if you burn it.

Is it bad to inhale burnt cotton?

Inhaling any smoke is unpleasant. The harshness of inhaling a plume of burnt cotton smoke is about as bad as inhaling smoke from a burning cigarette, especially for those wanting to quit the latter. … Inhaling smoke is something that all vapers want to avoid, which is why many vapers transitioned to vaping.

Is burning fabric toxic?

Fiber may shrink from the flame, melt, and can drip (DANGER) leaving a hard plastic-like bead. Burning these fabrics will produce black smoke and hazardous fumes.