Two men in a Cleckheaton pub were sprayed with an unknown substance and one attacked with an axe during a robbery.
West Yorkshire Police said three men entered the Marsh Hotel in Cleckheaton and made demands for money at 11.10pm on Monday 6 May.
Drinkers were told to hand over their wallets and an unknown amount of cash was taken from the till.
The force added one man developed breathing difficulties and collapsed when he had the substance sprayed on him.
As he got back to his feet, he was attacked with what was thought to be an axe and was again sprayed.
The man suffered injuries to his lip and skin irritation.
Plans for new Leeds Kirkgate Market attraction move forward
Big Doggie Do set to return to Milton Keynes
Bradford Council appoints David Watson as new culture and events director
Drug Arrests After Police Raid in Allerton
Appeal after serious collision on Vicar Lane in Leeds
Leeds 400 challenge launched to get city moving
Accrington drug dealer jailed for 10 years
Culture at the Heart of Stockport’s Transformation
South Asian Art Exhibition Opens at Cartwright Hall
Men’s Mental Fitness Programme Launches in Blackburn
Council Calls for Tougher Fly-Tipping Sentences
Alim OnAir
Bhangra Nights
The Golden Era
Legal Show