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Hello, Would anyone please answer the question below?
I'm wondering if the following sentences sound natural and have no grammar mistakes,

1.The smell travels for 1 kilo meter.
2.The smell travels up to 1 kilo meter ahead.
3.You can smell it from 1 kilo meter away .
4.The smell reached 1 kilo meter ahead.


and if there are mistakes or any better way to say, I would like examples.

I would be more than happy if someone could check them and teach me.

Thank you in advance.

Yoshi
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They're OK but:

1.The smell travels for 1 kilometer.
2.The smell travels up to 1 kilometer ahead.
3.You can smell it from 1 kilometer away .
4.The smell reached 1 kilometer ahead.
Comments  
Thank you Mr Micawber !
Sorry I forgot one sentence to ask.
What if I say,
" The smell travels 1 kilometer away"
Is this also okay?

Yoshi