Sentence and idiom check

Hi,
are the following sentences and idioms used in them correct, please?

1) Mary is a really open-minded/honest/frank/sincere person; she never keeps her opinion about other people within her mind. She simply calls a spade a spade.

2) We were having dinner when we started feeling a foul stench. It was clear that somebody had cut the cheese.

3) The teachers who are demanding a better pay are simply crying wolf again. Somebody should talk some sense into them. They don't have a cat in hell's chance of having their wages raised.

4) She used to be too much of a talkative person. She would talk and talk until the cows come home, so it's clear she wasn't a kind of person you would confide any doubts to. She would have spilled the beans even if you'd told her to keep mum.

5) I came late to work because some glass shards lying on the road had punctured my tires while on my way. However, my boss didn't believe what I was saying and almost had me fired. I have so much respect for him that I almost crapped in my pants.

6) When retired, people have many chances of fulfilling their dreams they have been dreaming of/about the whole life. Needless to say, they gotta have a lot of money in case it's about travelling to other countries.

7) Out of all girls in our class, nobody can hold a candle to your beauty and your character. You're second to none. I long/yearn for your presence when I'm at home!

These sentences have been hard for me to make up and to put the words into the correct order, so please don't get mad at me if you find any nonsense in these sentences.
Thank you in advance!