Yes, most pesticides or insect repellents will cause that reaction in shrimps, the effect is very fast. The aerosol chemicals disperse in the air and come in contact with the tank water, then dissolve in it.
If you can smell the repellent where the tank is, most likely the chemicals would also have reached and dissolved in the tank.
Cease the use of the repellent, then do a series of water changes to gradually remove the toxic chemicals, hopefully the shrimps can last through the effects and recover in time.
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