On gloss:

gapci
x1 is gaseous/fumes/a gas/vapor of material/composition including x2, under conditions x3.

On affix form:

ganse
x1 [observer] senses/detects/notices stimulus x2 (object/nu) by means x3 under conditions x4.

In definition:

fulta
x1 (passive) floats on/in fluid (gas/liquid) x2; x1 is buoyant.
jicla
x1 (object, or event: force) stirs/mixes/[roils/agitates] fluid (gas/liquid) x2.
navni
x1 is a quantity of/contains/is made of noble gas of type x2 [helium/neon/argon/krypton/xenon/radon].
sakci
x1 sucks/is suction/vacuum/relatively low pressure of fluid/gas x2 relative to high pressure x3.
vasxu
x1 breathes/respires x2 [gas].
bifpra
c1 is a fan/blower/punkah blowing air/gas with speed b3 by process c3.
cafygapci
x1 is a gas of x2 at room temperature/STP.
damtubnu
t1 is a chimney made of of material t2 for emitting/expelling smoke/gas/steam/magma t3=d1 from source d2.
damtu'u
t1 is a chimney made of of material t2 for emitting/expelling smoke/gas/steam/magma t3=d1 from source d2.
fompralitki
x1 is an effervescent liquid of composition x2, releasing gas x3
gacybo'i
b1 is a gas cylinder [closable container for gas] made of material b3 with lid b4.
gaxykafke
x1=k1=g2 farts, expelling gas x2=k2.
kolgapci
x1 is a quantity of coal gas
ma'erlilvau
v1 is a gas tank/fuel container containing fuel l1, of vehicle m1.
pavmoinavni
x1 is a quantity of/contains/is made of helium (He; the first noble gas)
tolfragapci
x1=t1=g1 is inert gas of material/composition including x2=g2, under conditions x3=g3.
tolsakci
s1 blows/exhales fluid/gas from high pressure of s2 to low pressure of s3.
vaxfanta
x1=f1 strangles x2=v1; x1=f1 prevents x2=v1 from breathing gas x3=v2.
vaxni'ajinru
j1=c1=v1 (object/person) is scuba diving beneath/below/under from c2 (object/water surface) in frame of reference c3 breathing/respiring v2 [gas], submerged in liquid j2.
vaxni'ajirpre
p1=v1 is a scuba diver breathing gas v2.
vaxselnandu
n2=v1 has difficulty breathing gas v2 under conditions n3; n1=v1 pants.
vaxyju'e
x1 is a respiratory mask or a gas mask.
vidgapci
g1=v1 is poison gas under conditions g3.
zbisakci
s1 sniffles fluid/gas/powder s2 through the nose.
zbisnava'u
v1 breathes gas v2 producing nasal sound; v1 snorts.
apci
x1 is a gas, is gaseous.
gaznatu
x1 is a quantity of natural gas, a mixture of methane with smaller amounts of ethane, propane, butane, other gaseous hydrocarbons and petroleum deposits
metxani
x1 is some methane/CH4/marsh gas/natural gas
runtngasnrproni
x1 is a spray aerosol of suspended substance/composition x2 in pressurized container x3 delivered under propulsion x4 (gas suspending the spray; pressure, temperature characteristics; etc.) through nozzle system x5; x5 is an atomizer/nebulizer/sprayer that delivers x1 by/under (force) x4 from container/source x2.

In notes:

flecu
x1 is a current/flow/river of/in x2 flowing in direction to/towards x3 from direction/source x4.
pambe
x1 is a pump/injector [tool/apparatus] pumping/inserting fluid x2 to x3 from x4 by means x5.
fletu'u
x1=t1 is a pipe/tube/hose carrying fluid x2=f2=t3 towards x3=f3 from x4=f4 (direction/source)
tisydakli
x1 is a balloon (general sense) of material x2