Hudson smoke unit

[NSthoroughbred]

I bought a scale Hudson last week,  and put the prescribed amount of smoke fluid in.    The smoke unit worked fine for a day or two,  I refilled the smoke unit as smoke started to taper off.    Suddenly the smoke unit started only making noises and  ceased to produce smoke, sputtered, spraying fluid in a fine mist all over my new loco.    Any tips, advice?

[the Bach-man]

Dear NS,
Sometimes a brief puff down the stack will free the blockage.
Have fun!
the Bach-man

[NSthoroughbred]

I have now tried to clear the smoke unit with puffs into the stack, yet I fear this smoke unit has ceased to operate.