The copycat suspect was caught on CCTV hurling cleaning fluid, whilst shouting ‘I’ve got acid’ outside The Chalice pub, Druids Heat at 8pm on Tuesday.
One man was hit in the face by the liquid, and in a panic threw a dog bowl of water over his face.
Fortunately he was unhurt.
PC Dave Spencer, of West Midlands Police, said: ‘Given the recent spate of acid attacks in London this was a hugely irresponsible act and very scary for the victim.
‘The attacker shouted “I’ve got acid” but we believe it was actually an ammonia-based cleaning fluid.
‘The victim was wearing glasses which prevented the substance going into his eyes and he reacted quickly by picking up a dog bowl of water and throwing it over his face.
‘He didn’t report feeling any burning sensation and was thankfully unhurt.’
The suspect was dressed in a blue T-shirt, beige shorts, shoes and with a bag across his shoulder. He has dark hair, a closely cropped beard and is believed to be in his 20s.
Police have arrested a man suspected of driving the car, seized a vehicle and also recovered a bottle containing a clear liquid.
A 21-year-old man from Solihull has been charged with a public order offence, and is due to appear at Birmingham Magistrates Court on August 16.