Bakudeku anguish

Izuku and Bakugou are adults, married, and madly in love; the problem is that Bakugou has been coming home later and later from work. Izuku lets it go, but his curiosity grows each day he sees him returning late at night.
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One ordinary night, Bakugou arrived late again; this time, he was still carrying the pheromones of another Omega. He looked quite disheveled: his hair was slightly messy, his buttons were half undone, and he seemed tired and a little sweaty.
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Izuku questioned him, but those questions ended in a fight, because according to Bakugou, she was just a customer who got too close and her pheromones rubbed off on him, and his appearance was due to "tiredness." Izuku refuses to believe him. Is it true or not?
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You're Deku!