By Beau Donelly
Four people have now been confirmed dead after the outbreak of "thunderstorm asthma" that swept across Melbourne on Monday night.
Melbourne father-of-two Clarence Leo is believed to have died in the early hours of Tuesday after suffering a massive asthma attack.
Mr Leo ran a private security company and was well known in Melbourne's nightclub scene.
His business partner, Andrew Christodoulou, described him as a "gentle giant".
Clarence and his wife, Amanda Leo.Credit: Facebook/Theystillcallmekaleve
"Clarence was good with everybody," he said. "Fair, willing to help. He always treated people with a lot of respect.
"He's got two girls who he adores, he's always talking about them."
Danny Saddoo, the manager of South Melbourne venue Club Pandora, remembered Mr Leo as "a really lovely, kind-hearted man".
Clarence with his family. Credit: Facebook/Theystillcallmekaleve
"He was a very friendly guy, not your typical bouncer."
Mr Saddoo told Fairfax Media Mr Leo died at 4.30am on Tuesday after an aggressive asthma attack.
"It came as a big shock. The last time we all saw him was Saturday night," he said.
Dominic D'Monte posted on Facebook a photo of Mr Leo with his daughters kissing his cheeks.
"I have no more words than these few, my brother, 'C-Lo' I have no comprehension of the last 24 hours. None! To think we were organising catching up next week somehow is still blowing me away! My promise is to be there forever for your family until we meet again."
Earlier this year, Mr Leo posted a photo of him and his wife on Facebook to mark their three-year anniversary.
"Three years ago today on the little island of Hawaii, this crazy lady made a silly little promise to stick around no matter what! It's been a trying time because im a difficult kinda guy, but shes still here by my side!"
Mr Leo's brother, Warren Leo, has set up a gofundme campaign, seeking donations to help support Mr Leo's wife Amanda and their two daughters.
"Our brother Clarence was a father, husband, son, and friend to many," he wrote.
"We are raising money to fill the shortfall of what the insurance doesn't cover so that his loved ones can focus on remembering 'Samoan Gravy' for the life he lived."
Earlier on Wednesday, 35-year-old Apollo Papadopoulos was identified as the third person to have died after Monday's storm.
Mr Papadopoulos is believed to have died after suffering an asthma attack, despite frantic efforts by paramedics to revive him.
Apollo Papadopoulos.Credit: Facebook/apollo.pap
Friends posted tributes on social media to Mr Papadopoulos, who is remembered as a "beautiful person" who will be dearly missed.
Dee Kay said on Facebook that paramedics tried to revive Mr Papadopoulos for more than 50 minutes.
Michelle Angela posted: "I can't believe you're gone. What am I going to do without you. Who else is gunna be there for me the way you always were when I was at my worst and at times when I needed it most. There's no one like you. I'm gunna miss you so much Apollo Papadopoulos. God Bless you. Till we meet again."
"Rip Apollo Papadopoulos you will dearly be missed," said Suzie Malek.
Josephine Tzimas said: "Not only did you have one of the coolest names going around but a beautiful smile and sense of humour to always make someone laugh. Rest easy mate."
Hope Carnevali, 20, died on her family's Hoppers Crossing front lawn after suffering an asthma attack and waiting more than 30 minutes for an ambulance.
Hope Carnevali.Credit: Facebook
Greenvale high-school student Omar Moujalled, 18, also died from an asthma attack before making it to hospital.
Omar Moujalled.
Ambulance Victoria was overwhelmed with 1900 calls between 6pm and 11pm on Monday and hospitals were inundated with more than 1000 people seeking help.
Health Minister Jill Hennessy has ordered a review into the response to the mass asthma event. There were almost 2000 calls for ambulances in five hours and about 30 people were admitted into intensive care units across the city.
Ms Hennessy said on Wednesday that the Inspector-General for Emergency Management would review the demand for help and how authorities could better communicate risks to the community.
On Tuesday, paramedics told Fairfax Media that they feared more deaths occurred during the catastrophe. Most hospital emergency departments reported double the usual number of patients during the night, prompting many to enact emergency plans and to set up makeshift emergency treatment spaces.