he smells fishy.

[halmom]

if someone seems suspicious or hide something or lying, can I say as follows?

He smells fishy. He seems to be lying.

 

[Copyright]

I would say no. I think the usual terms would be ...

Something smells fishy.
Something is fishy.
That smells fishy.
That's fishy.

"He smells fishy" would apply to someone who handles fish.

 

[eli7]

What about these two?
I smell something fishy
and
something has a fishy smell

 

[kentix]

You can say (at least in AE), "He seems kind of fishy. I don't trust him."

 

[london calling]

What about these two?
I smell something fishy (meaning: you are suspicious, although in a specific context it could mean you can literally smell something fishy)
and
something has a fishy smell (meaning: something smells of fish, which may happen if you store fish with other foods without covering it properly ).

 

[semeeran]

1. I smell something fishy about you.
2. I smell something fishy of you.
Do you consider both sentences mean the same?
And they mean I suspect your dealings.
Please comment.

 

[eli7]

So, in no case "something has a fishy smell" would mean "I am suspicious about something or someone"?

 

[Barque]

That's right. That sounds as if you're referring to an actual fishy smell. It would probably be understood if you used it to express suspicion though, if the context was right.