Native speaker
In Emirati Arabic, “Spray” is رش (rash).
رش
Spray
It's in the phrasebook under At the pharmacy, with 57 more like it.
nafkha
qatra
mal'agatmaal chaay malyaana
mara bil yohm
kabsoola
maratayn bil yohm
Source: DLIFLC Emirati Medical Language Survival Kit (2007). Credits and licences