A man with asthma claims he was asked to leave a shop for not wearing a facemask.
Henry Widdas, claimed he felt "discriminated against" on his visit to Llangollen, Wales
The shop said it was simply following the Welsh Government's coronavirus guidelines.
Mr Widdas, of Blackburn, Lancashire was on week-long holiday with his partner and nine-year-old son and went into a gifts shop.
He said the shopkeeper asked him why he wasn't wearing a facemask and replied that he was exempt.
North Wales Live reports Mr Widdas is asthmatic but he insisted: "You don't have to give the reason why you're exempt in a shop."
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He said: "He asked for the proof of exemption and I said he wasn't allowed to ask that. The shopkeeper said: 'I can just ask you to leave - I'm within my rights.'
"I said 'I think that's discrimination. Can take your name and number?' "
Mr Widdas told the paper: "Unfortunately my son had just picked out a toy dragon. He ended up in tears, running out of the shop.
"I was in the process of getting the shopkeeper's name and number. But I couldn't have my son crying his eyes out. So I crumpled up the paper and left too."
He accepts being asked to leave would have been justified if he had been "swearing or rude", but insists he wasn't.
On the exemption rule, Mr Widdas said: "I don't carry proof of exemption as I am not required to show any proof that I am exempt according to government guidance, with the reason being that exemptions are a medically private matter.
"I was quite shocked at the attitude and his not being aware that he's not allowed to ask for proof of exemption."
Mr Widdas added: "I just hope the situation I experienced will increase awareness among shop staff that they should not be asking for that proof if told by a customer they are exempt."
Later, Mr Widdas contacted Denbighshire County Council about his experience.
Sion Dennis, co-owner of Siop Fach, told North Wales Liv e: "We were simply following the Welsh Government's guidelines. which are that you have to wear a mask to be in a shop or you have to have an exemption card."
Denbighshire County Council referred North Wales Live t Welsh Government guidelines.
They state: "Face coverings will remain a legal requirement indoors, with the exception of hospitality premises."
Guidelines also say: "Face coverings must be worn in all indoor public places...It applies to everyone aged 11 and over, unless an exception applies.
Its rules state that "those who have an age, health or disability reason for not wearing a face covering should not be asked to give any written evidence of this.
"Carrying an exemption card is a personal choice and is not necessary in law."
