Modifiers matching atmosphere:

• isolated,
• inert,
• dry,
• dynamic,
• controlled,
• alkaline,
• explosive,
• cool,
• chemical,
• vital,
• inexpensive,
• thick,
• special,
• bad,
• dense,
• harmful,
• clean,
• indoor,
• surrounding,
• carbonaceous,
• smoky,
• flammable,
• saturated,
• gaseous,
• innocuous,
• corrosive,
• outer,
• dangerous,
• working,
• diffusing,
• severe,
• neutral,
• hazardous,
• protective,
• solar,
• outdoor,
• rich,
• qualified,
• tropical,
• heavy,
• warm,
• active,
• molecular,
• industrial,
• wet,
• single,
• rarefied,
• planetary,
• closed,
• extraneous,
• reactive,
• oxidative,
• pure,

Simple categories matching gaseous:

• odor,
• monomer,
• fuel,
• hydrocarbon,
• contamination,
• substrate,
• oxide,
• substance,
• mass,
• anaesthetic,
• impurity,
• matter,
• reactant,
• fluid,
• compound,
• agent,
• acid,
• mixture,
• precursor,
• contaminant,
• medium,
• pollutant,
• fumigant,
• constituent,
• buffer,
• material,
• atmosphere,
• component,
• sulphide,
• state,
• chemical,
• waste,
• anesthetic,
• phenomenon,
• flow,
• alkyne,
• system,
• body,
• carrier,
• molecule,
• form,
• object,
• salt,
• cyanide,
• plasma,
• alkane,
• olefin,