I'm looking for an idiom or expression that could be used for criticizing someone who tries to hide a big fact in their life/ an important issue while the nature of that fact/ issue is so that it will be disclosed inevitably.
1- A pregnant woman who tries to hide her pregnancy
2- A celebrity who has had a nose job or another cosmetic surgery but tries to keep it as a secret
3- A person who has fallen in love with somebody, engaged or married recently but tries to not disclose it
4- A country that sells military equipment and ammunition to another country secretly (but it is clear that after those equipment are applied or used, everybody would find out where they have been made in.)
We Iranians use this proverb:
"You cannot ride a camel furtively."
"Why are you trying to hide you're pregnancy?! You'll eventually start showing and people will know. As the proverb says "You cannot ride a camel furtively".
Is there any idiom, expression, or proverb for criticizing behavior or implying " such facts or issues cannot be concealed"?
1- For a person who tries to conceal the fact he/ she is in love with somebody, I just found this proverb: "Love and cough cannot be hid", but I don't think it can be used for my other examples too.
2- In the bellow cartoon the former president of Yemen is shown while riding a camel furtively (I found it in a Persian website and it had no comment, so I just used it for showing that Persian proverb and translated the Persian texts into English).