Kikou Kikou no Mi

Introduction
the Kikou Kikou no Mi is a paramecia Devil Fruit that allows the user to convert any gasses they breath in into other gasses at will.

Strengths
As a side effect of the power, the user is able to inhale any vapour or gas and breath it as easily as if it were air. This affords them immunity to any choking atmospheres or harmful or poisnous gasses.

Weaknesses
The user suffers from standard Devil Fruit weaknesses. Needless to say, their immunity to harmful atmospheres does not offer them any improved breathing ability if submerged in water, as they are only able to convert gasses rather than liquids.